28 lines
875 B
Diff
28 lines
875 B
Diff
Subject: cpu-rt-variants.patch
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Fri, 17 Jun 2011 15:42:38 +0200
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/3.10/patches-3.10.10-rt7.tar.xz
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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include/linux/smp.h | 8 ++++++++
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1 file changed, 8 insertions(+)
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--- a/include/linux/smp.h
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+++ b/include/linux/smp.h
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@@ -223,6 +223,14 @@ static inline void kick_all_cpus_sync(vo
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#define get_cpu() ({ preempt_disable(); smp_processor_id(); })
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#define put_cpu() preempt_enable()
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+#ifndef CONFIG_PREEMPT_RT_FULL
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+# define get_cpu_light() get_cpu()
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+# define put_cpu_light() put_cpu()
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+#else
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+# define get_cpu_light() ({ migrate_disable(); smp_processor_id(); })
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+# define put_cpu_light() migrate_enable()
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+#endif
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+
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/*
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* Callback to arch code if there's nosmp or maxcpus=0 on the
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* boot command line:
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